Policies & Publications

Design Guidelines

Disclaimer:

These documents have been prepared by the Wood I-Joist Manufacturer’s Association. Every attempt has been made to ensure that the data and information presented is as accurate and complete as possible and in a fashion representative of the industry at large. The user is cautioned that the data and information presented is indicative of I-joists in general. Consultation with the specific manufacturer regarding each proprietary joist is required prior to completing design and installation on any specific project.

The following Adobe Acrobat PDF documents can be viewed online or downloaded. Documents will open in a new window. If you do not have the free Adobe Acrobat reader, click here to get it.


 

Code Requirements For Prefabricated Wood I-Joists

 


 

Code Requirements For Structural Composite Lumber (SCL)

 


 

WIJMA Statement: Membrane Protection of Floor Assemblies

 


 

Basis of IRC Membrane Protection Provisions

 


 

WIJMA Position Statement: Offset Bearing Walls



 

Establishing Prefabricated Wood I-Joist Composite EI

 


 

Establishing Shear Capacities with Web Holes

 


 

WIJMA Deck Connection Detail



WIJMA Position Statement: Solid Sawn Rim Boards

 


WIJMA Position Statement: 3/4″ Plywood or OSB used as Rim Board

 


Dropped Header Design Guide



WIJMA Sealed Caul Plate Test Method